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Epicardial transplantation of antioxidant polyurethane scaffold based human amniotic epithelial stem cell patch for myocardial infarction treatment

ABSTRACT: Epicardial transplantation of antioxidant polyurethane scaffold based human amniotic epithelial stem cell patch for myocardial infarction treatment

PROVIDER: PRJNA995593 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25306245_1.fastq.gz	Fastqsanger.gz
	SRR25306245_2.fastq.gz	Fastqsanger.gz
	SRR25306246_1.fastq.gz	Fastqsanger.gz
	SRR25306246_2.fastq.gz	Fastqsanger.gz

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Epicardial transplantation of antioxidant polyurethane scaffold based human amniotic epithelial stem cell patch for myocardial infarction treatment

Project description:Myocardial infarction (MI) is a leading cause of death globally. Stem cell therapy is considered a potential strategy for MI treatment. Transplantation of classic stem cells including embryonic, induced pluripotent and cardiac stem cells exhibited certain repairing effect on MI via supplementing cardiomyocytes, however, their clinical applications were blocked by problems of cell survival, differentiation, functional activity and also biosafety and ethical concerns. Here, we introduced human amniotic epithelial stem cells (hAESCs) featured with immunomodulatory activities, immune-privilege and biosafety, for constructing a stem cell cardiac patch based on porous antioxidant polyurethane (PUR), which demonstrated decent hAESCs compatibility. In rats, the administration of PUR-hAESC patch significantly reduced fibrosis and facilitated vascularization in myocardium after MI and consequently improved cardiac remodeling and function. Mechanistically, the patch facilitated a desirable immune response for cardiac repair, framing the infiltration of neutrophils and inflammatory macrophages. Our findings may provide a potential therapeutic strategy for MI.

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Epicardial transplantation of atrial micrografts

Project description:Ischemic heart disease remains the leading cause of mortality and morbidity worldwide despite improved possibilities in medical care. Alongside interventional therapies, such as coronary artery bypass grafting (CABG), adjuvant tissue-engineered and cell-based treatments can provide regenerative improvement. Unfortunately, most of these advanced approaches require multiple lengthy and costly preparation stages without in turn delivering significant clinical benefit. Here, we investigated the effect of epicardial matrix patch-encased atrial appendage micrografts (AAMs) in a mouse model of myocardial infarction. The matrix-covered AAM patches salvaged the myocardium from infarction-induced functional tissue loss. Fibrosis was attenuated, and site-targeted proteomics revealed AAM patch-activated pathways for angiogenesis and cardiogenesis. The matrix component of the graft further supports functional myocardial recovery by ventricular unloading. The composite epicardial matrix graft encasing AAM micrografts delivers effects desirable for adjuvant cardiac therapy preserving functional cardiac tissue and restricting fibrosis after myocardial infarction.

2019-07-23 | MSV000084120 | MassIVE

Comparative gene expression profiling of human primary endotheliocytes cultivated on polyurethane-based electrospun 3D matrices and natural decellularized vein

Project description:We have evaluated the functional state of HUVEC cultivated on the surface of autologous decellularized human umbilical vein and electrospun polyurethane-based matrices by NGS gene expression profiling

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CDH18 is an epicardial biomarker regulating epicardial specification and differentiation towards vascular smooth muscle cells

Project description:The epicardium is a mesothelial layer covering the myocardium and contributes to different cardiac lineage descendants during cardiogenesis. Fine-tuned balanced signaling defines epicardial specification and regulates cell plasticity and cell-fate decisions of epicardial-derived cells (EPCDs) by epicardial-to-mesenchymal transition (EMT). However, powerful tools to investigate epicardial cell function, including markers with pivotal roles in developmental signaling, are still lacking. Here, we recapitulated embryonic epicardiogenesis using human induced pluripotent stem cells (hiPSCs) and identified type II classical cadherin CDH18 as a novel biomarker defining lineage specification in human developing epicardium. The loss of CDH18 led to the onset of EMT and specific differentiation towards cardiac smooth muscle cells. Furthermore, GATA4 regulated epicardial CDH18 expression. These results demonstrate the production and enrichment of hiPSC-derived epicardial cells via the tracing of CDH18 expression, providing a model for investigating epicardial function in human development and disease and enabling new possibilities for regenerative medicine.

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Lakshman scaffold

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Project description:Single cell RNA sequencing (scRNA-Seq) is applied to charaterize the pro-epicardial cells (proEpiCs) in mouse pro-epicardial organ (PEO).

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Genome-wide analysis of epicardial gene expression in E11.5 mouse hearts

Project description:Identification of epicardium-enriched genes in the embryonic heart. The epicardium encapsulates the heart and functions as a source of multipotent progenitor cells and paracrine factors essential for cardiac development and repair. Injury of the adult heart results in re-activation of a developmental gene program in the epicardium, but the transcriptional basis of epicardial gene expression has not been delineated. We established a mouse embryonic heart organ culture and gene expression system that facilitated the identification of epicardial enhancers activated during heart development and injury. Epicardial activation of these enhancers depends on a combinatorial transcriptional code centered on CCAAT/enhancer binding protein (C/EBP) transcription factors. Disruption of C/EBP signaling in the adult epicardium reduced injury-induced neutrophil infiltration and improved cardiac function. These findings reveal a transcriptional basis for epicardial activation and heart injury, providing a platform for enhancing cardiac regeneration. Total RNA obtained from lacZ-positive epicardial cells isolated from the E11.5 Tcf21lacZ hearts compared to total dissociated heart cells

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Project description:The goal of the present study is to determine the miRNA cargo present in epicardial extracellular vesicles. For that, epicardial cells and human primary epicardial cells were cultured. Conditioned media was isolated from mouse epicardial cells and human primary epicardial cells derived from right atrial appendages in two different states: “cobble” (inactive) cells and “spindle” (active) . RNA from EVs was isolated and sequenced to determine the miRNA content profile.

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Single epicardial cell transcriptome sequencing identifies Caveolin-1 as an essential factor in zebrafish heart regeneration

Project description:By contrast with mammals, adult zebrafish have a high capacity to regenerate damaged or lost myocardium through proliferation of spared cardiomyocytes. The epicardial sheet covering the heart is activated by injury and aids muscle regeneration through paracrine effects and as a multipotent cell source, and has received recent attention as a target in cardiac repair strategies. While it is recognized that epicardium is required for muscle regeneration and itself has high regenerative potential, the extent of cellular heterogeneity within epicardial tissue is largely unexplored. In this study, we performed transcriptome analysis on dozens of epicardial lineage cells purified from zebrafish harboring a transgenic reporter for the pan-epicardial gene tcf21. Hierarchical clustering analysis suggested the presence of at least three epicardial cell subsets defined by expression signatures. We validated many new pan-epicardial and epicardial markers by alternative expression assays. Additionally, we explored the function of the scaffolding protein and main component of caveolae, caveolin-1 (cav1), which was present in each epicardial subset. In BAC transgenic zebrafish, cav1 regulatory sequences drove strong expression in ostensibly all epicardial cells and in coronary vascular endothelial cells. Moreover, cav1 mutant zebrafish generated by genome editing showed grossly normal heart development and adult cardiac anatomy, but displayed profound defects in injury-induced cardiomyocyte proliferation and heart regeneration. Our study defines a new platform for the discovery of epicardial lineage markers, genetic tools, and mechanisms of heart regeneration. Deep sequencing of isolated single epicardial cells

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